Exotic collider signals from the complete phase diagram of minimal universal extra dimensions

Journal Article · Thu Feb 01 00:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.036004· OSTI ID:21011018

Cembranos, Jose A. R.; Feng, Jonathan L; Strigari, Louis E ^[1]

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1. Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States)

Minimal universal extra dimensions (mUED) is often thought to predict that the lightest Kaluza-Klein particle (LKP) is the Kaluza-Klein gauge boson B{sup 1}, leading to conventional missing energy signals at colliders and weakly interacting massive particle (WIMP) dark matter. In fact, the implications of mUED are far richer: the B{sup 1}, charged Higgs boson H{sup {+-}}{sup 1}, and graviton G{sup 1} are all possible LKPs, leading to many different phases with distinct signatures. Considering the complete phase diagram, we find predictions for charged or neutral particles with decay lengths of microns to tens of meters; WIMP, superWIMP, or charged relic particles; metastable particles with lifetimes of the order of or in excess of the age of the Universe; and scenarios combining two or more of these phenomena. In the cosmologically preferred region, the Higgs boson mass is between 180 and 245 GeV, the LKP mass is between 810 and 1400 GeV, and the maximal splitting between first Kaluza-Klein modes is less than 320 GeV. This region predicts a variety of exotic collider signals, such as slow charged particles, displaced vertices, tracks with nonvanishing impact parameters, track kinks, and even vanishing charged tracks, all of which provide early discovery possibilities at the Large Hadron Collider.

• OSTI ID: 21011018
• Journal Information: Physical Review. D, Particles Fields, Vol. 75, Issue 3; Other Information: DOI: 10.1103/PhysRevD.75.036004; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
CHARGED PARTICLES
COSMOLOGY
GEV RANGE
HIGGS BOSONS
IMPACT PARAMETER
INTERMEDIATE BOSONS
KALUZA-KLEIN THEORY
LIFETIME
MANY-DIMENSIONAL CALCULATIONS
NEUTRAL PARTICLES
NONLUMINOUS MATTER
PARTICLE IDENTIFICATION
PHASE DIAGRAMS
REST MASS
SPARTICLES
SUPERSYMMETRY
UNIVERSE
WEAK INTERACTIONS